Alphons custodis



(No-Model.) I

A. CUSTODIS. ELECTRIC REGISTERING APPARATUS.

Patented July 23, 1895.

Unite STATES AL PHONS CUSTODIS, OF DUSSELDORF, GERMANY.

' "ELECTRIC REGISTERING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 543,336, dated July23,1895.

Application tiled March 19, 1895- Serial No. 542,329. (No model.)

To all whom it mag concern:

Be it known that I, .ALPHONS CUsToDIs, a subject of the German Emperor,residing at Dusseldorf, Germany, have invented certain' carries a diskw", upon which is wound the upper insulated end of a wire (1, the lowerend of which is exposed and carries a metal contact-piece c, Thiscontact-piece is contained within a non-conducting vessel A containingacidulated water or other liquid, which is of course a poor conductor.The contact 0 by wire cl, contact a, and wire Z, connects with a .coil3; At itslower end the vesselA is provided with contact k, whichconnects by wire Z with battery 0, and thence by wire Z with coil .9.

The current travels from battery 0 thrdugh wire Z to'contact is, throughthe liqiiid contents of vessel A to contact 0, and goes from wire d tocontact a, wire Z, coil 8, and wire Z back to the battery.

As the water in vessel A is a poor. conductor, it is clear that thedistance between the contacts lo o constitutes a resistance, and thatthe strength of the current depends upon the proximity oflsuchoontacts.Thus as the contact c is raised or lowered by the motion 'of Agalvanometer may, if desired, be connected with the circuit.

tion of the scale-beamfand of the pointerz.

Thus when the contact 0 israised, as indicated in the drawing, thecurrent of the coil 8 is weak, and consequently its core is raised sothat the pointer inclines toward the left.

If, on the other hand, the contact 0 is lowered,

wthe current passing'through coil 5 will predominate over the currentpassing through coil 8', and the pointer will incline toward the right.

The pointer may be provided with a pencil to register the variations ofthe apparatus upon a strip surrounding drum 2 and moved by clockwork. Analarm may, if desired,be sounded at the extreme positions of thepointer.

What I claim is An electric registering apparatus composed of a vessel,an inclosed suspended movable contact, a pair of coils of which one 1sconnected to the contact and the other to afixed resistance, a pointercontrolled by the coilcores and abattery, substantially as specified. Intestimony whereof I have signed this specification in the presence oftwo subscribv

